Alternatively, polyvinyl chloride shield 64 could be formed with suitable spacing members so as to provide a space 68, or polyvinyl chloride shield 64 could be formed as a substantially cylindrical member whose outside diameter is somewhat less than the inside diameter of insulator 66. Passageway 28 of housing 12 and hole 75 in substrate 70 are filled with a suitable gel 100a and 100b (generally referred to as gel 100), which provides a hydraulic coupling for transmission of pressure pulses from the passageway of coupling tube 20 to pressure transducer 80. FIG. Consistent with these objects, the present invention is directed to a novel disposable pressure transducer apparatus for monitoring human blood pressure. This lightweight disposable device reports real time intracavitary mean pressures with an oscillating pressure bar graph (Fig. To this end, as discussed further below, the interior of housing 12 is continuously vented to atmospheric pressure by means of a vent channel in cable 14. The pressure transducer is also covered by an opaque cap which prevents light from contacting the transducer. Channel 76 helps further isolate pressure transducer 80 from mechanical stress. As further depicted in FIG. 3 through 5, substrate 70 has a hole 75 therethrough. It will be readily appreciated that polyvinyl chloride shield 64 and insulator material 66 may be configured in a wide variety of ways so as to form such a space 68. Find details of companies offering disposable pressure transducer at best price. For example, upon a flexing or bending of substrate 70 and/or housing 12, channel 76 helps to mechanically isolate pressure transducer 80 from the bending movement and, thus, helps minimize the occurrence of any inaccurate, resulting, transient signals. Also, semiconductors (particularly silicon semiconductors), are quite sensitive to light, such that exposure of semiconductor pressure transducers to light can produce transient variations in the pressure readings. 2,048 disposable pressure transducer products are offered for sale by suppliers on Alibaba.com, of which tracheal cannula accounts for 18%, pressure sensors accounts for 1%, and pressure transmitters accounts for 1%. Such circuitry may comprise resistors, thermistors, or other electrical components which are designed to compensate for fluctuations in the transducer output which are caused by variations in temperature. The housing is provided with a fluid coupling passageway for connecting the housing to a catheter, and a second passageway extends from the fluid coupling passageway so as to communicate through the hole in the substrate with the pressure transducer. Adhesive 92 may, for example, comprise an epoxy resin adhesive. It will be readily appreciated that one of the most important components of the above-described blood pressure monitoring system is the pressure transducer. As a result, the cost of providing such a coating is eliminated. 6 is an enlarged, cross-sectional view taken along lines 6--6 of FIG. Find here Disposable Pressure Transducer, Disposable Blood Pressure Transducer manufacturers, suppliers & exporters in India. In addition, a central portion of pressure transducer 80 is etched away (such as, for example, by chemical etching techniques), so as to form a piezoresistive diaphragm 81. Enter Model No. COBE Laboratories, Inc., "20 Years of Reusables is Long Enough . Usually, the pressure transducer consists of two parts, one is an elastic material that deforms under pressure, and the other is an electrical part that detects such deformation. Such a tinted housing is also intended to shield the semiconductor transducer from light. Additionally, the electrical insulators in the prior art transducer devices have occasionally failed. It is, therefore, an object of the present invention to provide a disposable pressure transducer apparatus wherein the semiconductor transducer of the apparatus is effectively shielded from exposure to light. Notably, when diagnosing and/or treating critically ill patients, such direct techniques are greatly preferred over any of the indirect techniques. This invention relates to pressure transducers for medical use and, more particularly, to a novel, disposable pressure transducer apparatus for use in the direct measurement and/or monitoring of human blood pressure. As shown best in FIG. One of the only disposable pressure transducers assembled in a highly automated assembly process. Thus, the pressure measured by pressure transducer 80 will be referenced to atmospheric pressure at all times, as is desirable. In using this technique, a needle is first inserted into a peripheral blood vessel. In a prospective randomized study, contamination rates of disposable pressure transducers changed every two days (n=81) were compared with those changed at four (n=26) or eight days (n = 50); the mean daily incidence of contamination was 3% for each group. As other pressure transducers, Elcam’s DIPT comprises 3 sub-components: a pressure sensor, a flush device and a stopcock. Extended use of disposable pressure transducers. I. Since all of the pressure sensing components, including the semiconductor pressure transducer, are secured to the same side of a dielectric substrate sheet, the present invention provides a disposable pressure transducer apparatus which has a minimum number of component parts such that the transducer apparatus is easy to manufacture and assemble. This is a mission critical application where your product cannot be allowed to fail. In addition, a cable 14 extends from housing 12 and serves to carry electrical signals which represent the pressure measurements made by transducer apparatus 10 to a monitor (not shown). With the growth of the semiconductor industry and the recent development of semiconductor pressure transducers, many of the above-mentioned problems of reusable transducers have been overcome. Additionally, housing 12 could be formed as part of another intravenous device. Additionally, due to the use of an opaque covering cap, an opaque coating, and an opaque silicone gel, the present invention further provides a disposable pressure transducer apparatus wherein the semiconductor pressure transducer of the apparatus is effectively shielded from exposure to light. Alternatively, coupling tube 20 may be connected so as to be outside of the direct fluid flow path, with one end 22 or 26 of coupling tube 20 being blocked as with a stopcock. … For example, as depicted in FIG. Elcam's disposable integrated pressure transducer is the most common OEM transducer, available in a variety of configurations according to the customers' needs. Standard TruWave pressure monitoring kits are sterile, single-use kits that relay blood pressure information from a pressure monitoring catheter to a patient monitoring system. Finally, electrical isolation of the prior art devices from a patient has typically been accomplished by various insulators. In addition, a movement of the prior art devices will occasionally subject the sensitive pressure measuring circuitry to mechanical stress, thereby also producing transient fluctuations in the pressure readings. Then, with the catheter thus in place, the needle may be withdrawn. A patient's blood pressure waveform can then be used by medical personnel to appropriately diagnose and treat the patient. Global Disposable Pressure Transducer Market Report to 2026 offers industry overview, segmentation by types, application, countries, key manufactures, cost analysis, industrial chain, sourcing strategy, downstream buyers, marketing strategy analysis, distributors/traders, factors affecting market, forecast and other important information for key insight. 5, cap 90 is provided with a vent hole 94 such that pressure transducer 80 is vented to the interior of housing 12. Finally, plate 50 may be secured to shell 40, and transducer apparatus 10 is then ready to be packaged and sterilized for use. As shown, coupling tube 20 of housing 12 is provided with suitable connectors for connecting coupling tube 20 to an indwelling, fluid-filled catheter (not shown). Further, direct blood pressure monitoring techniques can be readily used to measure and monitor a patient's blood pressure at a specific internal location, such as within the chambers of the heart. Consequently, these transducers have generally been provided in the form of a reusable instrument which can be connected to a fluid-filled catheter by means of a disposable dome.Although such reusable pressure transducers can produce acceptable results, the use of such transducers has a number of significant disadvantages. TruWave disposable pressure transducers: Accurate and safe pressure monitoring. Duration of hypotension prior to initiation of effective antimicrobial therapy is the critical determinant of survival in human septic shock. The apparatus comprises a two-sided dielectric substrate sheet which has a hole therethrough. Additionally, as with other prior art pressure transducers, the pressure diaphragm and circuitry must be mounted such that thermal expansion and contraction of the diaphragm and circuitry will not subject the sensitive measuring circuitry to mechanical stress. In addition, a portion of the chip may be etched away (such as, for example, by means of suitable chemicals), so as to form a thin pressure diaphragm. As pressure pulses are thereafter transmitted along the fluid column of the catheter, such pressure pulses enter the passageway of coupling tube 20 and are transmitted through gel 100 to pressure transducer 80. Pediatric & flushless transducers. Transpac IV Disposable Pressure Transducers provide clinicians with real-time access to their patient's hemodynamic and cardiovascular status in surgical and intensive care settings. A variety of methods are currently used for measuring and/or monitoring blood pressure. For example, housing 12 could be formed as part of an intravenous continuous flush device. As shown best in FIG. Pressure transducer 80 is next mounted on substrate 70 with a suitable adhesive 82. These are the advantages of Elcam's Sense-IT™ Integrated Disposable Pressure Transducer. A wide variety of disposable pressure transducer options are available to you, such as ce, msds. Cable 14 is connected to housing 12 in some suitable manner, such as, for example, by means of a connecting sheath 62. Thereafter, cable 14 may be attached to shell 40 of housing 12, and conductors 60 of cable 14 may be connected to the appropriate solder pads 74. Thus, the pyrex pedestal will expand and contract with variations in temperature in substantially the same manner as in silicon chip, thereby minimizing mechanical stress which may be caused by such thermal expansion and contraction. 3 through 5. Reliable hemodynamic and cardiovascular data is needed to manage critical patients. Thus, although housing 12 is illustrated herein as being a substantially cubical structure, it will be appreciated that housing 12 could also be formed as a substantially cylindrical or ellipsoid structure. Further, as illustrated, shell 40 may be provided with a recessed shelf 42, and back plate 50 may be formed so as to fit snugly within recessed shelf 42. As a result of these developments, therefore, several manufacturers have recently placed disposable pressure transducers on the market. As a result, the use of blood pressure measurement and monitoring may increase the likelihood that a patient can be successfully treated and/or provided with needed emergency assistance. 5 is an enlarged, cross-sectional view taken along lines 5--5 of FIG. Importantly, this catheter is filled with some type of solution, such as, for example, a sterile saline solution. Further, housing 12 may be formed of a wide variety of substances. The generated electrical signals are then transmitted along cable 14 to a monitor (not shown) such that the pressure data may be appropriately displayed and/or recorded. circuit means for temperature compensation provide on said first side of said substrate, said means circuit being electrically connected to said pressure diaphragm; means for a housing said substrate, said housing means comprising a first passageway communicating with said fluid-filled catheter, a second passageway providing fluid communication between said pressure diaphragm and said first passageway, and means for mounting said substrate in said housing means such that said second side of the substrate faces toward said second passageway and said first side of the substrate faces away from said second passageway; an electrical cable comprising a plurality of separate electrical conductors, said cable being connected to said housing means and said conductors being attached to said circuit means for temperature compensation and said pressure transducer on said first side of said substrate; means for hydraulically coupling said pressure diaphragm through said second passageway to said first passsageway; and. 2. For example, as shown best in FIG. Further, the repeated use and the uncertain life of the pressure transducer have made it difficult to accurately charge patients for the use of the transducer device. Privacy Policy • The pressure across a centrifuge can be used as an indication of unit throughput. Advantageously, by measuring and/or monitoring the blood pressure of these and other types of patients, medical personnel are better able to detect blood flow difficulties and other cardiovascular problems at an early stage. The above-mentioned disadvantage can be overcome by forming cable 14 in the manner illustrated in FIGS. This increases the safety of the device by helping to prevent electrical shock hazard to the patient. Benefits of Transpac IV. poll, to a fluid manifold adjacent the patient's bedside, or to the patient himself. Disposable transducer for the continuous measurement of physiological pressure and determination of other important haemodynamic parameters. 1 is a perspective view illustrating one presently preferred embodiment of the disposable pressure transducer apparatus of the present invention. Pressure transducer 80 is formed by methods which are well-known in the art so as to include the required piezoresistive pressure diaphragm and measuring circuitry. Further, it is an object of the present invention to provide a disposable pressure transducer apparatus wherein the electrical circuitry of the apparatus is effectively isolated from the patient, thereby minimizing the likelihood that the patient will receive an electrical shock from the apparatus. One presently preferred configuration for housing 12 of transducer apparatus 10 is illustrated in FIGS. In addition, in order to minimize the difficulty caused by thermal expansion and contraction of the semiconductor transducer, prior art devices have typically mounted the transducer on a pyrex pedestal. Typical indirect techniques may, for example, yield errors as high as ten percent, whereas direct blood pressure measurement and monitoring techniques are generally accurate to within about one percent. Further, temperature compensation circuit 72 is used to match the input and output impedance of transducer apparatus 10 with that of the monitor device (not shown), typical impedances being about 350 ohms. Significantly, in an operating room, where there are typically many cables being used, such a procedure can be quite confusing. This may easily be done by referencing the pressure readings to atmospheric pressure. Importantly, pressure transducer 80 is mounted to substrate 70 such that thermal expansion and contraction of pressure transducer 80 will not subject pressure transducer 80 to mechanical stress which might cause incorrect, transient pressure readings. For example, medical personnel frequently use various indirect blood pressure measurement techniques, such as measuring a patient's blood pressure by using a pressure cuff and a stethoscope. For example, four resistive elements are ion-implanted on pressure transducer 80 so as to form a conventional Wheatstone bridge. It is a still further object of the present invention to provide a disposable pressure transducer apparatus which has a minimum number of component parts such that the transducer apparatus is easy to manufacture and assemble. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT. One of the most widely used techniques for direct blood pressure measurement and monitoring is called catheterization. After four days of use, the cumulative prevalences of contamination were similar. A separate reusable interface cable is used with this system to connect the transducer to a pressure monitor. Housing 12 may be configured in any suitable manner. Thus, such coating helps further eliminate transient fluctuations in the output signal as transducer apparatus 10 is exposed to various light sources. Sense-IT™ (Disposable Integrated Pressure Transducers) Products Found: 16 Elcam's Sense-IT™ (DIPT), is the first and only fully integrated pressure transducer, providing reliability and robustness no other transducer can provide, along with the space saving and ease of use so much needed in critical care. Pressure Transducer. Significantly, since such silicon chips are readily adapted to being mass produced, the total cost of pressure transducers can be reduced substantially. For example, one prior art device provides the temperature compensation circuitry as part of a connector in a cable which is used to connect the transducer device to an external monitor. As illustrated, housing 12 is provided with a fluid coupling tube 20 which may be connected to a catheter (not shown). This integration assures not only a very high degree of robustness  and reliability , but also ease of use and space saving that are much needed in Intensive Care Units and Operating Rooms. FIG. These advantages will provide you the peace of mind and the leading edge you need when sourcing a sensitive device such as Disposable Pressure Transducer. Cable 14 may comprise virtually any suitable cable having multiple conductors. Advantageously, several substrate sections may be formed simultaneously as part of a large sheet of substrate material, each substrate portion 70 being provided with an appropriate hole 75. As illustrated in FIGS. FIG. As described below, cap 90 houses the semiconductor pressure transducer and the associated electrical connections between the pressure transducer and the compensation circuit 72. 2, substrate 70 is also provided with solder pads 74. Since magnet wires are typically already insulated, they do not require a separate insulation coating. BRIEF SUMMARY AND OBJECTS OF THE INVENTION. To use transducer apparatus 10, coupling tube 20 is first connected to the fluid-filled catheter extending from the patient. Significantly, the pressure transducer, the opaque cap, the temperature compensation circuit, and the solder pads are all positioned on the same side of the dielectric substrate sheet, thereby greatly facilitating manufacture and assembly of the apparatus. A clear gel 100a may thereafter be placed in passageway 28 of housing 12. In addition, the catheter may be formed so as to facilitate the further threading of the catheter along the blood vessel. Once the needle is properly inserted, a special catheter is threaded through the needle and into the blood vessel. Listed manufacturers, suppliers, dealers & exporters are offering best deals for disposable pressure transducer. Consequently, the use of such a cable may give rise to concerns regarding adequate asepsis. 1 and 2. The attachment of the semiconductor pressure transducer 80 of transducer apparatus 10 is depicted in FIGS. As mentioned above, a cap 90 is secured to substrate 70 so as to cover pressure transducer 80. The scope of the invention is, therefore, indicated by the appended claims, rather than by the foregoing description. Some efforts have been made to solve each of these problems in the prior art semiconductor transducer devices, and these efforts are briefly discussed below. circuit means for temperature compensation provided on said first side of said substrate, said circuit means being electrically connected to said pressure diaphragm; means for housing said substrate, said housing means comprising a first passageway communicating with said fluid-filled catheter, a second passageway providing fluid communication between said pressure diaphragm and said first passageway, and means for mounting said substrate in said housing means such that said second side of the substrate faces toward said second passageway and said first side of the substrate faces away from said second passageway; means for shielding said pressure transducer from exposure to light, said shielding means comprising an opaque coating formed on at least one of said first and second sides of said substrate and an opaque cap secured to the first side of said substrate so as to cover said pressure transducer, said cap having a hole formed therethrough; an electrical cable comprising a plurality of separate electrical conductors, said cable being connected to said housing means and said conductors being attached to said circuit means for temperature compensation and said pressure transducer on said first side of the substrate, and said cable having a space formed through the interior of said cable, the space through said cable and the hole formed through said cap together providing a means for venting one side of the pressure transducer to atmospheric pressure; and. We are manufacturer of Anesthesia Breathing Circuit in China, if you want to buy Medical Supply, Disposable Pressure Transducer, Airway Management, please contact us. All rights reserved. Usually, the monitor device is used to display the patient's blood pressure as a function of time, this type of display being commonly referred to as the blood pressure waveform. © 2004-2021 FreePatentsOnline.com. a plurality of electrical conductors, at least one of said electrical conductors being connected to each said solder pad. It should be noted, however, that if the cable 14 of transducer apparatus 10 is formed in the manner just described, cable 14 will be relatively expensive (typically on the order of 70¢ to $1.00 per foot). This preference for direct blood pressure measurement and monitoring in certain cases is due to several factors. 7 is an enlarged, cross-sectional view taken along lines 7--7 of FIG. These and other objects and features of the present invention will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. Typically, the wires are also connected together in a conventional Wheatstone bridge configuration. A bacteriologic evaluation. • Each SciPres® pressure sensor is pre-calibrated and has a unique sensor ID making it NIST traceable and suitable for single-use GMP applications. Coupling tube 20 is then filled with fluid, and any air bubbles are removed. Letters Patent is: Click for automatic bibliography Thus, for example, one presently preferred embodiment of housing 12 is approximately one inch (2.54 cm) wide, 1.5 inches (3.81 cm) long, and 0.5 inch (1.27 cm) deep. Watch the following video that summarizes all the benefits  of the Sense-IT ™, And this video that further explains how the only unibody transducer improves patients' safety with full visibility of the flow path and safe and easy to use priming and flushing. As further depicted in FIG. Compass CT Disposable Pressure Transducer product photo Compass CT Port Disposable Pressure Transducer Product Photo The Compass CT/Compass CT Port is a disposable pressure transducer with integrated digital display intended for direct measurement and monitoring of physiological pressure, including during the infusion of fluids and therapeutic and diagnostic agents. Disposable Pressure Transducer. Advantageously, fluid-tight seal 102 may also be opaque so as to assist in shielding transistor chip 80 from light. Both the second passageway through the housing and the hole in the substrate are filled with a silicone gel such that pressure pulses may be transmitted through the silicone gel to the pressure transducer. In addition, the silicone gel extends into the space between the housing and the dielectric substrate so as to form a fluid-tight seal, thereby providing electrical isolation of the transducer apparatus from the patient. The present transducer is then connected to some type of monitor device near the patient's bedside. , such direct techniques are greatly preferred over any of a Compact, Sterile, Single-Use pressure across. Is exposed to various light sources magnet wire conductors 60 incorporated as part of another intravenous device techniques! Shock may be disconnected and discarded shock or cardiovascular ailments back plate 50 cases is due to several factors so... The likelihood that light will penetrate substrate 70 may then be oven-cured the! 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